10111001120221 has 2 divisors, whose sum is σ = 10111001120222. Its totient is φ = 10111001120220.

The previous prime is 10111001120201. The next prime is 10111001120263. The reversal of 10111001120221 is 12202110011101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9887163316996 + 223837803225 = 3144386^2 + 473115^2 .

It is a cyclic number.

It is not a de Polignac number, because 10111001120221 - 2¹³ = 10111001112029 is a prime.

It is a super-2 number, since 2×10111001120221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10111001120201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5055500560110 + 5055500560111.

It is an arithmetic number, because the mean of its divisors is an integer number (5055500560111).

Almost surely, 2^{10111001120221} is an apocalyptic number.

It is an amenable number.

10111001120221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10111001120221 is an equidigital number, since it uses as much as digits as its factorization.

10111001120221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10111001120221 its reverse (12202110011101), we get a palindrome (22313111131322).

The spelling of 10111001120221 in words is "ten trillion, one hundred eleven billion, one million, one hundred twenty thousand, two hundred twenty-one".